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send a high (
) to the processor. The GPIO enable switch (
1
nects the push buttons from the corresponding push button signals. Refer
to
"PB Enable Switch (SW2)" on page 2-8
Rotary Encoder with Momentary Switch (SW14)
The rotary encoder (
counter-clockwise for a down count. The encoder also features a momen-
tary switch, activated by pushing the switch towards the processor, which
resets the counter to zero. The rotary encoder is a two-bit quadrature (gray
code) encoder. Refer to the Rotary Counter section of the ADSP-BF51x
Blackfin Processor Hardware Reference for more information.
The rotary encoder is disconnected from the processor by setting
positions 1, 2, and 3 to
page 2-14
for more information.
SPORT0 ENBL Switch (SW15)
The
enable switch (
SPORT0
cessor to the audio codec, SSM2602 (
used on the expansion interface II, turn
set to all
.
ON
SPI/TWI Switch (SW16)
The SPI/TWI switch (
audio codec. By default,
SPI interface. TWI is selected by setting
ADSP-BF518F EZ-Board Evaluation System Manual
ADSP-BF518F EZ-Board Hardware Reference
) can be turned clockwise for an up count or
SW14
. See
"Encoder Enable Switch (SW19)" on
OFF
) connects the
SW15
U1
) selects the control interface for the SSM2602
SW16
is
,
SW16
ON
OFF
for more information.
interface of the pro-
SPORT0
). When the
SPORT0
all
. By default,
SW15
OFF
,
,
,
,
and selects the
ON
OFF
ON
OFF
to
,
,
SW16
OFF
OFF
) discon-
SW2
SW19
interface is
is
SW15
,
,
,
.
OFF
ON
OFF
ON
2-13
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